Clear-Site-Data Header Generator

Generate a Clear-Site-Data header to purge cookies, cache and storage — runs 100% in your browser. No data is uploaded; nothing leaves your device.

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Wildcard — clear everything ("*")

cache — clear cached responsescookies — clear cookies & HTTP authstorage — localStorage, IndexedDB, SW, etc.executionContexts — reload browsing contexts

Clear-Site-Data: "cache", "cookies", "storage"

Send Clear-Site-Data on logout or after a breach to purge cookies, caches and storage for your origin in one shot. Best set on the logout response. Runs entirely in your browser.

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Reach for Clear-Site-Data Header Generator whenever you need to generate a Clear-Site-Data header to purge cookies, cache and storage. Web developers and security engineers use it to harden a site before launch, fix failing securityheaders.com or Mozilla Observatory scans, and meet client or compliance security requirements.

How to embed Clear-Site-Data Header Generator on your website

Add this free tool to your own site, blog or intranet — it's 100% free to embed. Paste this snippet where you want the tool to appear; it loads a clean, self-contained version with no ads or navigation.

<iframe src="https://tooljolt.com/embed/clear-site-data-generator" title="Clear-Site-Data Header Generator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px" loading="lazy"></iframe>

About Clear-Site-Data Header Generator

Clear-Site-Data Header Generator is a free online web-security header tool that lets you generate a Clear-Site-Data header to purge cookies, cache and storage. It runs entirely in your browser — no sign-up, no uploads and nothing ever sent to a server — so it is fast, private and safe to use with sensitive data. Whether you are a developer, security professional, student or just curious, Clear-Site-Data Header Generator gives you an instant, reliable result with zero setup.

How to use Clear-Site-Data Header Generator

1Pick the options you want in Clear-Site-Data Header Generator.
2Copy the generated header (or meta tag).
3Add it to your server, CDN or framework config.
4Re-test with a security-headers scanner to confirm.

Why use Clear-Site-Data Header Generator?

✓100% free with no sign-up, accounts, watermarks or usage limits
✓Runs entirely in your browser — your input never leaves your device, ideal for confidential security data
✓Hardens your site against XSS, clickjacking and data leaks
✓Improves scores on Mozilla Observatory and securityheaders.com
✓Works on any device with a modern web browser, online or offline

Frequently asked questions

Where do I add the output from Clear-Site-Data Header Generator?+

Send it as an HTTP response header from your server or CDN (Nginx, Apache, Cloudflare, Vercel, etc.). Many headers can also be set via a meta tag, but the HTTP header is the most reliable.

Will this improve my security score?+

Yes. Correct security headers are checked by tools like Mozilla Observatory and securityheaders.com and defend against XSS, clickjacking and data leaks — a quick win for safety and for the trust signals search engines value.

Is Clear-Site-Data Header Generator free to use?+

Yes. Clear-Site-Data Header Generator is 100% free with no sign-up, no account, no usage limits and no watermarks. Use it as often as you like.

Does Clear-Site-Data Header Generator upload my data to a server?+

No. Clear-Site-Data Header Generator runs entirely in your browser using JavaScript — nothing you type or upload ever leaves your device. That makes it safe to use with sensitive or confidential security data.